Natural radioactivity measurements in soil samples of central Kutahya (Turkey).

Measurement of the natural radioactivity of surface soils at 20 locations in central Kutahya has been made using gamma ray spectroscopy. Natural gamma ray radioactivity of the terrestrial nuclides in soil samples and the absorbed gamma ray dose rates of these radionuclides in the air have been calculated throughout different areas of central Kutahya. The average annual effective dose equivalent for a person living in central Kutahya was found to be approximately 57 microSv.